Apache Struts 2.0.0 < 2.5.26 Possible Remote Code Execution vulnerability (S2-061)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(151425);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/09");

  script_cve_id("CVE-2020-17530");
  script_xref(name:"IAVA", value:"2020-A-0565-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");

  script_name(english:"Apache Struts 2.0.0 < 2.5.26 Possible Remote Code Execution vulnerability (S2-061)");

  script_set_attribute(attribute:"synopsis", value:
"Apache Struts installed on the remote host is affected by Possible Remote Code Execution vulnerability");
  script_set_attribute(attribute:"description", value:
"The version of Apache Struts installed on the remote host is prior to 2.5.26. It is, therefore, affected by a
vulnerability as referenced in the S2-061 advisory.

  - Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code
    execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25. (CVE-2020-17530)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://cwiki.apache.org/confluence/display/WW/S2-061");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Struts version 2.5.26 or later. Alternatively, apply the workaround as referenced in in the vendor's
security bulletin");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-17530");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Apache Struts 2 Forced Multi OGNL Evaluation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("os_fingerprint.nasl", "struts_detect_win.nbin", "struts_detect_nix.nbin");
  script_require_ports("installed_sw/Apache Struts", "installed_sw/Struts");

  exit(0);
}

include('vcf.inc');

var os = get_kb_item_or_exit('Host/OS');
var win_local = ('windows' >< tolower(os));

var app_info = vcf::get_app_info(app:'Apache Struts', win_local:win_local);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
  { 'min_version' : '2.0.0', 'max_version' : '2.5.25', 'fixed_version' : '2.5.26' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);